package com.example.rjwmproject.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.example.rjwmproject.common.CustomException;
import com.example.rjwmproject.entity.Category;
import com.example.rjwmproject.entity.Dish;
import com.example.rjwmproject.entity.Setmeal;
import com.example.rjwmproject.mapper.CategoryMapper;
import com.example.rjwmproject.service.CategoryService;
import com.example.rjwmproject.service.DishService;
import com.example.rjwmproject.service.SetmealService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class CategoryServiceImpl extends ServiceImpl<CategoryMapper, Category> implements CategoryService {

    @Autowired
    private DishService dishService;

    @Autowired
    private SetmealService setmealService;

//    根据id删除分类，删除之前需要进行判断
//    @Override
//    public void remove(Long id) {
//
//        LambdaQueryWrapper<Dish> dishLambdaQueryWrapper=new LambdaQueryWrapper<>();
//        //添加查询条件,根据分类id进行查询
//        dishLambdaQueryWrapper.eq(Dish::getCategoryId,id);
//        int count1 = dishService.count(dishLambdaQueryWrapper);
//
//        //查询当前分类是否关联了菜品，如果关联，则抛出一个业务异常
//        if(count1>0){
//            //关联了菜品抛出一个业务异常
//            throw new CustomException("当前分类下关联了菜品，不能删除");
//        }
//
//        //查询当前分类是否关联了套餐，如果关联，则抛出一个业务异常
//        LambdaQueryWrapper<Setmeal> setmealLambdaQueryWrapper=new LambdaQueryWrapper<>();
//        setmealLambdaQueryWrapper.eq(Setmeal::getCategoryId,id);
//        int count2 = setmealService.count();
//        if(count2>0){
//            //关联了套餐抛出一个业务异常
//            throw new CustomException("当前分类下关联了套餐，不能删除");
//        }
//
//        //正常删除分类
//        super.removeById(id);
//
//    }
@Override
public void remove(Long ids) {

    LambdaQueryWrapper<Dish> dishLambdaQueryWrapper=new LambdaQueryWrapper<>();
    //添加查询条件,根据分类id进行查询
    dishLambdaQueryWrapper.eq(Dish::getCategoryId,ids);
    int count1 = dishService.count(dishLambdaQueryWrapper);

    //查询当前分类是否关联了菜品，如果关联，则抛出一个业务异常
    if(count1>0){
        //关联了菜品抛出一个业务异常
        throw new CustomException("当前分类下关联了菜品，不能删除");
    }

    //查询当前分类是否关联了套餐，如果关联，则抛出一个业务异常
    LambdaQueryWrapper<Setmeal> setmealLambdaQueryWrapper=new LambdaQueryWrapper<>();
    setmealLambdaQueryWrapper.eq(Setmeal::getCategoryId,ids);
    int count2 = setmealService.count(setmealLambdaQueryWrapper);
    if(count2>0){
        //关联了套餐抛出一个业务异常
        throw new CustomException("当前分类下关联了套餐，不能删除");
    }

    //正常删除分类
    super.removeById(ids);

}
}
